My first major AJAX project

I'm working on my first major AJAX project and I've been following the updates this entire time. I really have to say this is an awesome framework to use. The Script# stuff from Nikhil Kothari is awesome, too, but it's in such an early phase, I can't justify it for this project.

The only really frustrating problem I've run into is when the user navigates back in their history and the ViewState is corrupted. The user gets an error message everytime. I've had a few alignment problems with popup boxes so I had to create my own popup dialog, and my last complaint is that it's difficult to setup accessibility options like default buttons and setting focus in specific fields.

Anyways, the AJAX project is definitely a success in my mind. I can't wait for the final release!